Seed Composition of Soybeans Grown in the Harran Region of Turkey As Affected by Row Spacing and Irrigation

Abstract

This study was conducted to determine the effects of row spacing (RS) and irrigation (IR) on protein content, oil content, and fatty acid composition of soybeans grown in the Harran region of Turkey. Oil content of the seed varied from 20.9 to 22.3%. Oil and protein contents were both affected by year. RS and IR affected protein and oil contents significantly (P < 0.01) in both years. RS of 70 cm had the highest protein content, followed by RS of 60, 40, and 50 cm, respectively. IR every 3rd day resulted in the highest level of protein, followed by 6th, 9th, and 12th day irrigation, respectively. The correlation coefficient (r) between protein and oil content was -0.791 in 1998 and -0.721 in 1999. RS (P < 0.01) and IR (P < 0.01) influenced oleic and linoleic acid contents significantly. Interactions of RS and IR were also found to be significant (P < 0.05) for the oleic and linoleic acid contents of soybeans.

Effect of drip irrigation intensity on soybean seed yield and quality in the semi arid Harran plain, Turkey

“…The level of linoleic acid found in the current study was higher than previous reported values ( Boydak et al, 2002), oleic acid level, however, was lower. Conversely, the results are consistent with the findings of Celik (1995), except for palmitic acid.…”

“…It is considered as a good source of high quality plant protein and vegetable oil. Given its high concentration of protein (36-48%), oil (18-24%), and carbohydrate (20%), soybean is grown in almost all parts of the world for human consumption, industry and animal feed (Arıoglu, 1989;Boydak et al, 2002). Besides, diets including soybean have been proposed to reduce risk of major diseases such as breast cancer, cardiovascular disease, osteoporosis, diabetes and obesity.…”

Soybean Seed Protein, Oil, Fatty Acids, and Isoflavones Altered by Potassium Fertilizer Rates in the Midsouth

“…Protein and oil analyses were based on a seed dry matter basis [50,51], and fatty acids were analyzed based on an oil basis.…”

ABA Increased Soybean Yield by Enhancing Production of Carbohydrates and Their Allocation in Seed

“…These authors suggest that by monitoring the minimum temperatures and the daily increase during the seed filling period might have predictive value for seeds oil concentration. It has been informed that not only the high temperatures but also the presence of water stress during the filling of seeds produces alterations in the contents of proteins and oils (Boydak et al, 2002). It is also frequently found a negative relationship between seed protein content and crop yield (Shannon et al, 1972;Yin & Vyn, 2005); moreover, there are evidences of a negative correlation between oils and proteins concentration.…”